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A corporation has a pool of six firms, four of which are local, from which it can purchase certain supplies. If three firms are randomly selected without replacement, find the probability that
a At least one selected firm is not local.
b All three selected firms are local.
Write a program for the dragon 12 so you can manipulate all four 7-segment LEDs:You will be able to enter any number or any sequence and be able to display them on the LED's each for one digit, and when you enter a sequence of 4 specific numbers
Give an example of an RC circuit whose transient behavior cannot be modeled by having a function generator with square wave output replacing the mechanical switch.
The initial voltage across the capacitor shown in Figure is vC(0+) = 10V. Find an expression for the voltage across the capacitor as a function of time. Also, determine the time t0 at which the voltage crosses zero.
A square wave has the following properties: Period(T)=8mS, Vmax= 25V, Vmin=-96V, Duty cycle=7%. The voltage of the wave falls across a resistor of Rload=74Ωs.
An article in the Wall Street Journal commented that despite Perry's remarks: " Bernanke is willing to embrace the political independence embedded in his role to do what Fed officials think the economy needs." How is "political independence" embed..
A voltage divider can provide a voltage at its output, but it cannot provide current. If a device is connected to the output of a voltage divider, what value of resistance should it have
A coil of wire contains 50 square turns, each one 5 cm long and 3 cm wide, and has a current of 30 A running through it. it is placed inside a magnetic field of 0.55 T at a 60 degree angle. what is the torque on the loop from the magnetic field
A duplex receptacle with one receptacle outlet always hot and the other outlet switched from two switch locations. The receptacle has two controlled outlets, must be powered through a switch control (SPDT), include all phase, neutral and grounding..
An amplifier produces an output voltage of 2v for an input of 50mv.- If the input and output currents in this condition are 4mA and 200mA, determine the voltage gain.
1- for the linear system : Sak y(n-k) = S br x(n-r) , (series a are from k=0 to n ) & ( series b from r=0 to m) a- find H(z) b- does this equation uniquely specify the unit sample response of l.s.i system c- choose, stable and casual system ,discuss ..
where ω0 is a constant, and Y, θ are statistically independent random variables. Assume that Y has a mean value of 3 and a variance of 9, and that θ is uniformly distributed from -π to π. Find the mean and mean-square value of the process.
Calculate the approximate quantization S/N ratio in the baseband audio signal at the receiver output (after the DAC and LPF).
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